A compact long-distance detection spectrometer based on linear gradient filter spectroscopy

Abstract

The invention discloses a compact long-distance detection spectrometer based on linear gradient filter light splitting, and specifically relates to the technical field of detection spectrometers. The detection spectrometer includes converging optical system, shaping optical system and spectroscopic and detecting system; The lens barrel, the three-way adapter lens barrel, and the reflective telescopic lens barrel are located between the incident lens barrel and the reflective lens barrel, the optical window is located at the front end of the incident lens barrel, and the concave mirror is located at the rear of the reflective lens barrel; the shaping optical system includes A biconvex lens, a cylindrical lens and a shaping lens barrel, the biconvex lens and the cylindrical lens are installed on the top of the shaping lens barrel; the light splitting and detection system includes a linear gradient filter and a line photodetector, and the linear gradient filter is pasted on the line The photosensitive surface of the photodetector.

Description

technical field [0001] The invention relates to the technical field of spectrometers, in particular to a compact long-distance detection spectrometer based on linear gradient filter light splitting. Background technique [0002] Spectral analysis technology with micro-spectrometer as the core spectrum acquisition method has been widely used in food, medicine, chemical industry and other fields in recent years due to its fast, non-destructive and high-precision online detection characteristics. The current mainstream miniature spectroscopic instruments generally use gratings for spectroscopic analysis. Due to the existence of spectroscopic optical paths and incident slits, it is difficult to further improve the indicators of spectroscopic instruments such as integration, vibration resistance, and detection distance. For field detection and space applications, the weight of the instrument Especially demanding fields such as and vibration resistance are unfavorable. As a major...

AI Technical Summary

Problems solved by technology

[0004] At present, due to the lack of incident optical system, the current spectral acquisition instruments designed based on multi-channel filters at home and abroad have low energy utilization and need to rely on active light source irradiation. The spectral detection distance is generally limited to within millimeters. For some outdoor spectral detection and local large-area spectral acquisition application scenarios, the application is limited

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